package com.example.android.apis.app;

import com.example.android.apis.R;

import android.app.Activity;
import android.app.PendingIntent;
import android.app.PendingIntent.CanceledException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

/**
 * Example of various Intent flags to modify the activity stack.
 */
public class IntentActivityFlags extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.intent_activity_flags);

		// Watch for button clicks.
		Button button = (Button) findViewById(R.id.flag_activity_clear_task);
		button.setOnClickListener(mFlagActivityClearTaskListener);
		button = (Button) findViewById(R.id.flag_activity_clear_task_pi);
		button.setOnClickListener(mFlagActivityClearTaskPIListener);
	}

	/**
	 * This creates an array of Intent objects representing the back stack for a
	 * user going into the Views/Lists API demos.
	 */

	private Intent[] buildIntentsToViewsLists() {
		// We are going to rebuild our task with a new back stack. This will
		// be done by launching an array of Intents, representing the new
		// back stack to be created, with the first entry holding the root
		// and requesting to reset the back stack.
		Intent[] intents = new Intent[3];

		// First: root activity of ApiDemos.
		// This is a convenient way to make the proper Intent to launch and
		// reset an application's task.
		intents[0] = Intent.makeRestartActivityTask(new ComponentName(this,
				com.example.android.apis.ApiDemos.class));

		Intent intent = new Intent(Intent.ACTION_MAIN);
		intent.setClass(IntentActivityFlags.this,
				com.example.android.apis.ApiDemos.class);
		intent.putExtra("com.example.android.apis.Path", "Views");
		intents[1] = intent;

		intent = new Intent(Intent.ACTION_MAIN);
		intent.setClass(IntentActivityFlags.this,
				com.example.android.apis.ApiDemos.class);
		intent.putExtra("com.example.android.apis.Path", "Views/Lists");

		intents[2] = intent;
		return intents;
	}

	private OnClickListener mFlagActivityClearTaskListener = new OnClickListener() {
		public void onClick(View v) {
			startActivities(buildIntentsToViewsLists());
		}
	};

	private OnClickListener mFlagActivityClearTaskPIListener = new OnClickListener() {
		public void onClick(View v) {
			Context context = IntentActivityFlags.this;

			PendingIntent pi = PendingIntent.getActivities(context, 0,
					buildIntentsToViewsLists(),
					PendingIntent.FLAG_UPDATE_CURRENT);

			try {
				pi.send();
			} catch (CanceledException e) {
				Log.w("IntentActivityFlags", "Failed sending PendingIntent", e);
			}
		}
	};
}
